Results 1 to 10 of about 2,352 (253)

Theoretical Model and Numerical Analysis of the Tip Leakage Vortex Variations of a Centrifugal Compressor

Aerospace, 2022
A centrifugal compressor of a micro turbine generator system is investigated by the theoretical model and numerical analysis to explore the characteristics of the tip leakage vortex as the centrifugal compressor approaches stall. The numerical simulation
Shuli Hong, Jun Chi, Xin Xiang, Weiyu Lu
doaj   +4 more sources

Analysis of hydrofoil tip leakage vortex dynamic characteristics

Advances in Mechanical Engineering
The clearance exists inevitably between the turbine guide vanes and the fixed wall, and the resulting tip leakage vortex leads to the increase of hydraulic loss.
Yuanyuan Gang, Ziyao Zhou, Jialing Li, Liang Peng, Demin Liu, Xiaobing Liu, Jiayang Pang   +6 more
doaj   +3 more sources

Investigation of Tip Leakage Vortex Structure and Trajectory in a Centrifugal Pump with a New Omega Vortex Identification Method

Applied Sciences, 2022
Semi-open centrifugal pumps are widely used in various fields. However, the tip leakage vortex (TLV) has a malign effect on the impeller flow field.
Bing Qian, Yinhui Cai, Qiang Ding, Daoli Zhao, Weipeng Sun, Like Wang   +5 more
doaj   +4 more sources

Influence of Shock Wave on Loss and Breakdown of Tip-Leakage Vortex in Turbine Rotor with Varying Backpressure

Applied Sciences, 2021
In modern turbine rotors, tip-leakage flow is a common phenomenon that accounts for about 1/3 of the stage loss. Studies show that as the imposed load increases, a shock wave appears in the tip region, which causes a significant interference on the ...
Zuojun Wei, Guangming Ren, Xiaohua Gan, Ming Ni, Weijie Chen   +4 more
doaj   +4 more sources

The axial tip clearance leakage analysis of the squealer blade tip for the liquid-ring pump [PDF]

Scientific Reports
The gas-liquid two phase leakage flow in the clearance of Liquid ring pump has severe negative impact on its hydraulic performance. In order to analyze the flow structure of leakage flow and suppress it, the squealer blade tip was introduced to Liquid ...
Xiaoxiao Wei, Xiaomei Guo, Chuanyuan Zhou, Taoyuan Zhang, Weijia Wang   +4 more
doaj   +2 more sources

RANS computations of a confined cavitating tip-leakage vortex [PDF]

European Journal of Mechanics, B/Fluids, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jean Decaix, Guillaume Balarac, Mohamed Farhat   +2 more
exaly   +4 more sources

Tip Leakage Vortex Cavitation from the Tip Clearance of a Single Hydrofoil

JSME International Journal Series B, 2002
Abstract Focusing on the tip leakage vortex cavitation, experimental and numerical studies were carried out as the first step of the investigation of cavitations in tip leakage flow. For a single hydrofoil with a tip clearance, tip leakage vortex cavitations were observed for various cavitation numbers and angles of attack.
Yoshiki Yoshida
exaly   +3 more sources

Analysis of the Formation Mechanism of Secondary Tip Leakage Vortex (S-TLV) in an Axial Flow Pump

Machines, 2022
Studies on the tip leakage vortex (TLV) are extensive, while studies on the secondary tip leakage vortex (S-TLV) are rare. To advance the understanding of the formation mechanism of the S-TLV, turbulent cavitating flows were numerically investigated ...
Hu Zhang, Jianbo Zang, Desheng Zhang, Weidong Shi, Jiean Shen   +4 more
doaj   +3 more sources

Influence of Blade Lean on Performance and Shock Wave/Tip Leakage Flow Interaction in a Transonic Compressor Rotor [PDF]

Journal of Applied Fluid Mechanics, 2022
Blade lean has been extensively used in axial compressor stators to control flow separations, but its influence mechanism on transonic compressor rotors remains to be revealed.
Z. Cao, X. Zhang, Y. Liang, B. Liu
doaj   +1 more source

Effect of rotor blade tip clearance on aerodynamic performance of high-speed multi-stage axial compressor

Nihon Kikai Gakkai ronbunshu, 2023
Using a high-speed multistage scale model compressor simulating a middle stage of a gas turbine compressor for power generation, the effects of 3 types of rotor tip clearances on performance and operating range, and the vortex structure of rotor tip ...
Ryosuke SEKI
doaj   +1 more source